This function is allow you to autocomplete the virtual products orders. That is, with this function, all the orders with virtual products will be change the status to completed automatically after the payment.
If you are selling virtual products in your shop and you want to stop manually changing the order status, you just have to follow these steps:
1º Activate the function making the slider show in green
2º Slide to the end, where you will find the button to save the settings
If you want to expand the possibilities of your shop, you can do it with the following functions included in this section.
Dedicated to WooCommerce plugins developing.